Ukwethulwa kwesixhumi esibonakalayo se-LVDS kwesikrini se-TFT-LCD LCD

Incazelo ye-LVDS Interface

Incazelo yesixhumi esibonakalayo se-LVDS isho umsebenzi wephinikhodi yokufaka yokuphela kwe-LVDS ohlangothini lwephaneli ye-LCD, engafundwa ngokujwayelekile ngokuthinta idatha yefekthri yokuqala yesikrini se-LCD (evame ukubizwa ngokuthi incwadi yokucaciswa kwesikrini).Nakuba amazinga ahlukene esiNgisi okusebenza kwesixhumi esibonakalayo sesikrini se-LCD ehlukile, Kodwa akunzima ukubona lokho, uma ukwahlulela ngokuhleleka kwezinhlamvu zayo ezibalulekile nezinombolo, Ngokwesibonelo, imodeli ethile yesikrini se-LCD ye-CLAA170EA02, Bheka ithebula lencazelo yesixhumi esibonakalayo elinikezwe Umkhiqizi, Njengoba kungabonwa kukholamu emfushane ngesiNgisi, Nge-RXO ne-RXE, Isiteshi ngasinye sinenombolo ethi “0″ ~ “3″ isignali yedatha yeqembu, Futhi sinesethi engu-1 yamasignali wewashi (RXOC noma i-RXEC), Lokhu kubonisa ukuthi isikrini se-LCD siyisikrini esingu-30-pin, dual, 8-bit, Futhi akunzima ukubona umsebenzi waso wephini, okungukuthi, “RXO0-” imele isethi yokuqala yedatha 1-, “RXO0 +” isho isethi yokuqala kwedatha: 1 +;“RXE0-” ikhombisa isethi yesibili yedatha 1-, “RXE0 +” ikhombisa isethi yesibili yedatha 1 +, Enye, nokunye.Isixhumi esibonakalayo se-LVDS sifaka i-LVDS isiNgisi esifushane esithi “Low Voltage Differential Signaling” okusho isiginali ehlukile yengcindezi ephansi.I-LVDS inqoba ububi bokudlulisa ukusetshenziswa kwamandla okuphezulu kwe-broadband kanye nokuphazamiseka kazibuthe kwe-EMI kumodi yezinga le-TTL, futhi iyimodi yokudlulisa isignali yevidiyo yedijithali.Isixhumi esibonakalayo esikhiphayo se-LVDS sisebenzisa i-voltage ephansi kakhulu (cishe 350mV) ukuze idlulise idatha ngomehluko ezintanjeni ezimbili ze-PCB noma ipheya yezintambo zebhalansi.Isixhumi esibonakalayo se-LVDS sidlulisela isignali ku-PCB ehlukile noma ikhebuli yebhalansi ngenani lamakhulu ama-megbit ngomzuzwana.Ngenxa ye-voltage ephansi kanye nemodi yokushayela yamanje ephansi, inezinzuzo zomsindo ophansi nokusetshenziswa kwamandla aphansi.Ku-TV yombala we-LCD, ulayini we-LVDS usebenzisa ikhebula lebhalansi kakhulu, empeleni uwumugqa wokubhanqa osontekile.Isixhumi esibonakalayo se-LVDS ingxenye ye-LCD yombala we-TV noma isibonisi sombala ekuqoshweni kokuqala kwamasiginali okokufaka (njenge-TV, i-AV, njll.), ukuze kutholwe isignali ye-RGB, inqubo yayo yokucubungula ngokuyisisekelo iyafana ne-TV yombala evamile, futhi bese ngokuguqulwa kwe-RGB-LVDS, isignali ye-LVDS ephumayo, ithunyelwe esikrinini se-LCD.Njengoba i-TFT esikrinini se-LCD ibona kuphela isignali ye-TTL (RGB), i-LVDS ethunyelwe kusikrini se-LCD idinga ukuqopha isignali ye-TTL.Kuyabonakala ukuthi umjikelezo wesixhumi esibonakalayo we-LVDS uhlanganisa izingxenye ezimbili: isekethe yesixhumi esibonakalayo se-LVDS ohlangothini lwebhodi le-motherboard (i-LVDS transmitter), kanye nesekethe yesixhumi esibonakalayo se-LVDS (isitholi se-LVDS) ohlangothini lwephaneli ye-LCD.Itheminali yokudlulisa i-LVDS iguqula isignali ye-TTL ibe isignali ye-LVDS, bese idlulisela isignali ku-LVDS decoding IC ohlangothini lwephaneli ye-LCD ngentambo yomugqa noma ikhebula eliguquguqukayo phakathi kwephaneli yokushayela kanye nephaneli ye-LCD), iguqule isignali ye-serial ibe isignali ehambisanayo yezinga le-TTL, bese uyithumela kusilawuli sesikhathi se-LCD kanye nesekhethi yedrayivu yamazinga.